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Re: filmscanners: RE: filmscanners: Pixels per inch vs DPI



Rob Geraghty wrote:

> "SKID Photography" <skid@bway.net> wrote:
> > Are you saying that because inkjet printers employ a schoastic dithering
> pattern to represent pixels that film
> > grain and scan pixels (samples, whatever) are equivalent in regards to the
> amount of information they impart
> > to an inkjet printer?
>
> I think Art was saying that the relationship between pixels in the file and
> dots on the page isn't clear cut because the dither pattern used by the
> printer driver is random and therefore undoes some of the regularity of the
> pixels.  The print ends up looking smoother than say a monitor image because
> the printer shadings aren't constructed as rectilinear sharp edged objects
> but random spots of colour.
>
> Rob

While I agree that the pixels will be 'smoother' because of the inkjet dither 
pattern, film grain still
contains/imparts more information (on a one to one basis) than a pixel, not 
matter how it is dithered by the
printer.

Harvey Ferdschneider
partner, SKID Photography, NYC





 




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